Surgery General d8e263ac Commonest site of branchial cyst: September 2012 A Lower 1/3rd of sternomastoid on anterior border B Lower 1/3rd of sternomastoid on posterior border C Upper 1/3rd of sternomastoid on anterior border D Upper 1/3rd of sternomastoid on posterior border High-Yield Explanation Ans. C i.e. Upper 1/3rd of sternomastoid on anterior border Branchial cyst MC site: Upper pa of neck, Wall is made of: Lymphoid tissue